<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
        <div v-for="(item, index) in titles" :key="index"
        class="title-item"
        :class="{active: index === currentIndex}"
        @click="titleClick(index)"
        >{{item}}</div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from "components/common/navbar/NavBar";
export default {
  components: {
    NavBar,
  },
  name: "Detailnavbar",

  data() {
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex: 0
    };
  },

  mounted() {},

  methods: {
    titleClick(index) {
      this.currentIndex = index;
      this.$emit('titleClick', index) 
    },

    backClick() {
      // this.$router.go(-1)
      this.$router.back()
    }
  },
};
</script>

<style lang="css" scoped>
  .title {
    display: flex;
  }

  .title-item {
    flex:1;
  }

  .active {
    color:var(--color-high-text)
  }

  .back img{
    margin-top: 13px;
    margin-left: 15px;
  }


</style>